Your Brain Is Starving, and It's Not for Food

Your Brain Is Starving, and It's Not for Food

Author: Dr. Mercola July 22, 2026 Duration: 6:58
  • Your brain is about 75% water, and even mild dehydration slows focus, memory, reaction time, and mental clarity long before intense thirst appears
  • Researchers found that 56% of older adults in a two-year cognitive study were physiologically dehydrated, even though most consumed what guidelines considered enough water
  • Dehydration interferes with blood flow, oxygen delivery, and communication between brain cells, which contributes to brain fog, fatigue, irritability, and slower thinking
  • Drinking excessive amounts of plain water creates its own problems by diluting sodium and disrupting electrolyte balance, which lowers cellular energy production and worsens dehydration at the cellular level
  • Consistent hydration throughout the day, along with mineral-rich fluids, whole fruits, and electrolyte support during heavy sweating, helps your brain maintain sharper focus, steadier energy, and better long-term cognitive health

Each week, Dr. Joseph Mercola-Take Control of Your Health offers a direct conversation about navigating the often-confusing world of wellness. Dr. Mercola brings decades of experience as a natural health advocate to these discussions, focusing on practical strategies that go beyond conventional approaches. The episodes dig into the interconnected areas of holistic health, physical fitness, and alternative methods for building resilience. You’ll hear detailed explorations of how everyday choices impact long-term vitality, with an emphasis on personal agency and evidence-informed alternatives. This isn’t about quick fixes but about understanding the underlying principles that can help you make better decisions for yourself and your family. The tone is straightforward and investigative, aiming to equip you with knowledge that is frequently overlooked. Tuning into this podcast feels like accessing a deep resource of non-mainstream health perspectives, all centered on the fundamental goal of sustainable well-being. It’s for anyone who feels that managing their health requires looking at the full picture, from nutrition and movement to the less obvious environmental factors. Dr. Mercola’s weekly insights serve as a catalyst for taking a more active, informed role in your own health journey.
Author: Language: English Episodes: 50

Dr. Joseph Mercola - Take Control of Your Health
Podcast Episodes
Geranylgeraniol — An Overlooked Driver of Healthy Aging [not-audio_url] [/not-audio_url]

Duration: 7:17
Geranylgeraniol (GG) is a naturally produced compound that helps regulate memory, metabolism, inflammation, and cellular repair, but your body makes less of it as you age Researchers found that GG supports important cell…
Why Most Supplements Don't Fit Real Life — And What Finally Does [not-audio_url] [/not-audio_url]

Duration: 6:17
Most supplement routines fail because they ask people to follow a perfect daily ritual in an imperfect real life Complicated regimens with multiple bottles, doses, and reminders create friction that causes people to quit…
This Golden Drink May Be Quietly Fighting Inflammation [not-audio_url] [/not-audio_url]

Duration: 7:03
Turmeric water contains curcumin, a plant compound linked to lower inflammation, improved circulation, healthier digestion, and reduced oxidative stress that gradually damages your cells over time Even though turmeric wa…
The Status of Cell-Cultured Meat Regulations [not-audio_url] [/not-audio_url]

Duration: 7:01
Cell-cultivated meat has already moved beyond the experimental stage, with five products completing federal review — though clearing review, as you'll see, turns out to be very different from reaching your plate The FDA…
Molecular Hydrogen Shows Promise for High Uric Acid Levels [not-audio_url] [/not-audio_url]

Duration: 7:12
High uric acid has been linked to far more than gout attacks; it also increases your risk of kidney stones, chronic kidney disease, metabolic syndrome, high blood pressure, and cardiovascular disease as inflammatory dama…
Why We Started with Your Gut [not-audio_url] [/not-audio_url]

Duration: 6:40
Story at-a-glance Butyrate is a short-chain fatty acid that serves as the primary fuel for the cells lining your colon. These cells rely on it for the majority of their energy, making it one of the most important molecul…
Why We Started with Your Gut [not-audio_url] [/not-audio_url]

Duration: 6:40
Butyrate is a short-chain fatty acid that serves as the primary fuel for the cells lining your colon. These cells rely on it for the majority of their energy, making it one of the most important molecules for gut health…
What Is the Difference Between Sunspots and Skin Cancer? [not-audio_url] [/not-audio_url]

Duration: 6:55
Sunspots usually stay flat and stable over time, while skin cancer often changes shape, color, texture, or sensation as abnormal cells grow and spread Melanoma warning signs follow the ABCDE rule: asymmetry, irregular bo…